166605097 has 2 divisors, whose sum is σ = 166605098. Its totient is φ = 166605096.

The previous prime is 166605059. The next prime is 166605113. The reversal of 166605097 is 790506661.

166605097 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140635881 + 25969216 = 11859^2 + 5096^2 .

It is a cyclic number.

It is not a de Polignac number, because 166605097 - 2¹⁹ = 166080809 is a prime.

It is not a weakly prime, because it can be changed into another prime (166605037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83302548 + 83302549.

It is an arithmetic number, because the mean of its divisors is an integer number (83302549).

Almost surely, 2^166605097 is an apocalyptic number.

It is an amenable number.

166605097 is a deficient number, since it is larger than the sum of its proper divisors (1).

166605097 is an equidigital number, since it uses as much as digits as its factorization.

166605097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 166605097 is about 12907.5596841541. The cubic root of 166605097 is about 550.2534336160.

The spelling of 166605097 in words is "one hundred sixty-six million, six hundred five thousand, ninety-seven".